Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-75B
The AirTAC Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-75B is a genuine double-acting COMPACT cylinder (Ø63mm bore) whose extend end-position is set by an external M16×1.5 adjustment screw. You can dial the stroke anywhere from 0 to 75 mm on the machine — no shims, no part change.
- BoreØ63 mm
- Max stroke75 mm
- Adjustable range0–75 mm
- Adjuster threadM16×1.5
- Port sizePT1/4
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-75B
The AirTAC SDAJ63X75-75B is a double-acting compact cylinder featuring an external adjustable extend stop. By turning the R (M16x1.5) screw, you can dial the forward stroke down from its 75 mm maximum to zero directly on the machine, eliminating the need for shims or part swaps during changeovers. Because the adjuster sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore, delivering 1558.6 N of push at 0.5 MPa.
This variant utilizes a male-thread M18x1.5 piston rod (Ø20 mm) for secure tool mounting and is equipped with a fixed NBR bumper at each end to absorb end-of-travel shock. The short riveted body significantly reduces axial mounting depth compared to conventional round-body or profile cylinders, fitting easily into tight machinery envelopes. Please note this specific SKU lacks a piston magnet and cannot support sensing switches.
Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-75B Technical Specifications
| Model | Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-75B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø63 mm |
| Max stroke | 75 mm |
| Adjustable range | 0 – 75 mm |
| Adjuster thread (R) | M16×1.5 |
| Port size | PT1/4 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M10×1.5 F / M18×1.5 male (B) |
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
The adjustment screw shortens the extend stroke by up to 75 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
Force matches a standard SDA of the same bore; the adjuster only sets the stop position, not the area. Actual usable force is lower than theoretical due to friction.
Model Code: Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-75B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 63 | Bore size in mm. |
| ×75 | Maximum stroke length in mm. |
| -75 | Adjustable window (10/20/30/40/50/75/100 mm). |
| S / B | S = magnet; B = male-thread rod (both optional). |
Thread: PT standard. Related SDA-family variants: SDA (fixed stroke), SDAD (double rod), SSA/STA (single acting), SDAT (duplex), SDAW (duplex-end).
Where the Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-75B Is Used
Variable Height Pressing
Dial in the exact 0-75 mm extend position for pressing bearings or pins, utilizing the full 1558.6 N push force without swapping mechanical spacers.
Multi-Format Tooling Changeover
Adjust the male M18x1.5 rod endpoint on the fly during production line format changes, saving axial depth in compact machine frames.
Prototype Positioning
Safely test different extend endpoints during R&D setup, relying on the fixed NBR bumper to absorb end shock at speeds up to 500 mm/s.
Is the Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-75B the Right Cylinder?
When sizing this actuator, compare its 1558.6 N push at 0.5 MPa against neighboring bores. Stepping down to the SDAJ50 yields 981.7 N, which may be insufficient for heavier tooling, while stepping up to the SDAJ80 provides 2513.3 N for high-mass payloads. Based on the 0.5 MPa rating, a safe working load is approximately 935 N (about 60 percent of capacity), translating to a vertical lift capability of roughly 79.4 kg with a 2:1 safety margin.
This model is ideal for setups requiring frequent on-site stroke tuning or trial positioning. Confirm your requirements for a 63 mm bore, 75 mm maximum stroke with a 75 mm adjustment window, PT1/4 air port, and the male M18x1.5 rod thread. Remember that a plain cylinder does not hold position or load when air is lost or the valve is centered; the bumper only decelerates near the end of travel. For load holding without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 0–75 mm
- ✓ Force at your working pressure
- ✓ Access to reach the R adjuster
- ✓ Magnet (S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the M16×1.5 adjuster after setting the stroke.
- check Avoid side load on the piston rod.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-75B FAQ
This 63 mm bore cylinder delivers 1558.6 N push and 1401.5 N pull at 0.5 MPa, 2182.1 N push and 1962.2 N pull at 0.7 MPa, with a theoretical maximum push of 318 kgf at 1.0 MPa.
The R (M16x1.5) screw mechanically shortens the extend stop from 75 mm down to 0 mm without changing the output force. This specific SKU has no magnet and cannot take sensors; adding the -S option enables reed or electronic switches.
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Standard models are processed and dispatched in 3-5 business days.
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